@article{ccfb068147f34616949d7f9ebe155c5e,
title = "Construction of cyclopenta[: B] pyran-2-ones via chemoselective (3 + 2) cycloaddition between 2-pyrones and vinyl cyclopropanes",
abstract = "A method for synthesising cyclopenta[b]pyran-2-ones through direct (3 + 2) cycloaddition between 2-pyrones and vinyl cyclopropanes is described. In the presence of Pd2(dba)3/dppe in toluene, a series of 2-pyrones undergo chemoselective (3 + 2) cycloaddition with vinyl cyclopropanes and afford cyclopenta[b]pyran-2-ones in high yields (78-96\%). The trans/cis ratio of the cycloadducts has been optimised up to 10:1. The proposed mechanism of this cycloaddition has been rationalised by computational studies.",
author = "Xuefeng Liang and Weijian Ye and Waygen Thor and Lantian Sun and Bo Wang and Shuzhong He and CHENG, \{Yuen Kit\} and LEE, \{Chi Sing\}",
note = "Funding Information: We gratefully acknowledge the National Natural Science Foundation of China (Grants 21562011 and 21871017), Peking University Shenzhen Graduate School and Hong Kong Baptist University (RC-SGT2/18-19/SCI/005 and RC-ICRS-18-19-01A) for the financial support of this work.",
year = "2020",
month = mar,
day = "21",
doi = "10.1039/d0qo00049c",
language = "English",
volume = "7",
pages = "840--845",
journal = "Organic Chemistry Frontiers",
issn = "2052-4110",
publisher = "Royal Society of Chemistry",
number = "6",
}